參數資料
型號: MLX90316
廠商: Electronic Theatre Controls, Inc.
英文描述: Rotary Position Sensor IC
中文描述: 旋轉位置傳感器IC
文件頁數: 29/41頁
文件大?。?/td> 688K
代理商: MLX90316
MLX90316
Rotary Position Sensor IC
3901090316
Rev. 003
Page 29 of 41
Data Sheet
April 07
16.9. Slave Reset
On internal soft failures the Slave resets after 1 second or after an (error) frame is sent. On internal hard
failures the Slave resets itself. In that case, the Serial Protocol will not come up. The serial protocol link is
enabled only after the completion of the first synchronization (the Master deactivates /SS for at least t5).
16.10. Frame Layer
16.10.1. Command Device Mechanism
Before each transmission of a data frame, the Master should send a byte AAh to enable a frame transfer.
The latch point for the angle measurement is at the last clock before the first data frame byte.
Latch point
/SS
SCLK
A
A
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
A
A
F
F
F
F
D
A
T
A
F
F
F
F
F
F
F
F
F
F
MOSI
MISO
Timing diagram
F
F
F
F
F
F
D
16.10.2. Data Frame Structure
A data frame consists of 10 bytes:
2 start bytes (AAh followed by FFh)
2 data bytes (DATA16 – most significant byte first)
2 inverted data bytes (/DATA16 - most significant byte first)
4 all-Hi bytes
The Master should send AAh (55h in case of inverting transistor) followed by 9 bytes FFh. The Slave will
answer with two bytes FFh followed by 4 data bytes and 4 bytes FFh.
16.10.3. Timing
There are no timing limits for frames: a frame transmission could be initiated at any time. There is no inter-
frame time defined.
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